Deleting part of a tag

Can someone show me how to do the following:
Change........Kinks The, to The Kinks
I have too many to do individually
Thanks if you can help a newbie.....MarkB

Here is the reverse request - I am sure, you can exchange the important parts:
Simple switch in the same field

Newbie here I a question about removing characters to the right of standard expression

George Gently S7 D1 E1_Title1

I want to remove everything to the right of "_" and including it...

I am sure this is a simple procedure but don't know what to pick this program can be so powerful if you can understand all the commands...!

Thanks,.
John G

You don't tell us in which tagfield this content is.
If it is not the filename you can use an action of

Type: Guess Values
Source Format: %the tagfield where this is content%
Guessing Pattern: %the tagfield where this is content%_%dummy%

Thanks guys for the help. Works perfectly.

Yes, shows you how new I am it is in the _FILENAME field. I am actually using this for rewriting MP4 files. I know it probably isn't meant for it but it does work I have done simple things like copy _FILENAME to Title name. This one has me stumped so for such a long time since responding. I didn't remember I had used this site to post this.

So you want to just change the filename only?
Take the Coverter Filename -> Filename.
Old filename pattern: %1_%2
New filename pattern: %1